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log (x-2)(x-1) = log 6
(x-2)(x-1) = 6
x² - 2x - 1x +2 = 6
x² - 3x + 2- 6 = 0
x² - 3x - 4 = 0
(x-4)(x+1) = 0
Jadi
x-4 = 0 -------> x = 4
atau
x+1 = 0 -------> x = -1
Nilai x tak mungkin negatif jadi:
Nilai x yang memenuhi adalah x = 4.
Semoga membantu... ^_^